+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277270 (2005 SB55) Classification: Main-belt Asteroid          SPK-ID: 2277270 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1590431857703922 3.6455e-08   a 2.4246904648916 1.2421e-08 au q 2.039059968848147 9.1646e-08 au i 1.692966228106076 5.9105e-06 deg node 183.0151731834711 0.00014518 deg peri 233.9550102943546 0.00014678 deg M 290.1460755095217 2.0306e-05 deg tp 2459268.090809530614 (2021-Feb-22.59080953) 7.8298e-05 TDB period 1379.059117060087 3.78 1.0597e-05 2.901e-08 d yr n .2610475472345645 2.0059e-09 deg/d Q 2.810320960935054 1.4397e-08 au   Orbit Determination Parameters    # obs. used (total)      231      data-arc span      6968 days (19.08 yr)      first obs. used      2001-09-19      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51684      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 21:19:36   Additional Information  Earth MOID = 1.05153 au   Jupiter MOID = 2.52197 au   T_jup = 3.493  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.5   n/a MPO437262   277270 (2005 SB55)          Discovered 2005-Sep-25 by Spacewatch at Kitt Peak Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-30 15:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin